*{
    margin:0;
    padding: 0;
    list-style: none;
    box-sizing: border-box;
}


ul{
    width: 600px;
    display: flex;
    flex-wrap: wrap;
background-color: rgb();
}
ul li{ 
    width: 20%;
    height: 100px;
    border-radius: 5px;
    margin:20px;
    background-color: orange;
 
}
button{
    width: 477px;
    display: block;
   padding: 10px;
   text-align: center;
    border:1px solid orange;
    border-radius: 4px;
    margin:10px 0;
}